Finding the Fourth Proportional to 6,399.30, 8,831.21 and 3,746.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,399.30 : 8,831.21 = 3,746.82 : x
2. Step 2: Convert to fraction form
   6,399.30/8,831.21 = 3,746.82/x
3. Step 3: Cross multiply
   6,399.30x = 8,831.21 × 3,746.82
4. Step 4: Simplify right side
   6,399.30x = 33,088,954.25
5. Step 5: Solve for x
   x = 33,088,954.25/6,399.30
6. Step 6: Final answer
   x = 5,170.71